Chinese PC maker Lenovo Group Ltd said it was up to IBM to resolve a wildcat strike at a China-based factory, as a deal to buy the U.S. company's server business had yet to be finalized. More than 1,000 workers went on strike last week to protest over the terms of their potential transfer to Lenovo, which said in January it would buy one of the server businesses of International Business Machine (IBM) for $2.3 billion. In a statement posted on its website late on Monday, Lenovo said the strike was an internal matter for IBM but it also pledged to maintain the salaries and benefits of all workers that chose to stay with the company after the deal is completed. More than 7,500 IBM employees in more than 60 countries were expected to transfer to Lenovo once the deal is completed, Lenovo said.